Cylinder-valve.



C.-R. HALL. CYLINDER VALVE.

APPLICATION FILED MAR. 26. 1915.

1,199,693. 9 PatentedSept. 26,1916.

NITED STATES PATENT OFFIC.

CHARLES R. HALL, OF DRIFTON, PENNSYLVANIA, ASS-IGNOB-OF ONE-THIRD TO I. J. BOYLE, F HAZLETON, PENNSYLVANIA.

CYLINDER-VALVE.

pecificati n f Il tters Paten Patented Sept. 26, 1916.

Application filed March 26, 1915. Serial No. 17,247.

' tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to a cylinder valve for steam engines.

The object of the present invention is to improve the construction of valves for steam and other fluid pressure engines and to provide a simple, practical, and efficient cylinder valve adapted to control the admission and exhaust of steam from the cylinder of an engine and capable of positive operation and of being connected with theusual valve gear of stationary engines and. locomotives.

With these and other objects in view the invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawing and pointed out in the claims hereto appended, it being understood that various changes in the form, proportion and minor details of construction may be resorted to, without departing from the'spirit or sacrificing any of the advantages of the invention.

In the drawing Figure 1 is a longitudinal sectional view of the cylinder valve constructed in accordance with this invention, Fig. 2 is a detail sectional view on the line 22 of Fig. 1, Fig. 3 is a detail sectional view of one of the piston valves.

Like numerals of reference designate corresponding parts in all the figures of the drawings.

In the drawing in which is illustrated the preferred embodiment of the invention, 1 designates a steam cylinder receiving a reciprocating piston 2, connected with a piston rod 3 and movable backwardly and forwardly between ports 4: of the cylinder. 1 he ports 4 which are formed in the steam cylinder at the end portion of a steam chest 5 are threaded for the reception of the threaded end 6 of valve cylinders 7 provided with screw caps or heads 8 at their upper or outer ends and receiving plston The valve stems or rods 10 which have forked or bifurcated upper or outer ends 12 are pivotally connected with the ends or arms of the lever 11 by bolts 13 which pass through slots 14 in the ends of the lever 11, and when the latter is oscillated by a valve rod 14, the piston valve-s will be sin1ultaneously moved in opposite directions to admit steam from the steam chest to one end of the cylinder and to exhaust the steam from the other end of the cylinder.

Each of the valve cylinders is provided at one side with an inlet port 15 and it has an exhaust groove or passage 16 extending from the lower portion of the cylinder and communicating with an exhaust pipe 17.

The exhaust groove 16 extends from the lower to the upper portion of the valve cylinder and the exhaust pipe 17 communicates with the upper portion of the valve cylinder at a point spaced from the upper end of the exhaust groove and when the piston valve is moved upwardly to open the inlet port 15 and close the exhaust it uncovers the said steam port 15 and covers and closes the inner end of the exhaust pipe 17.

When the piston valve moves downwardly to cut off the steam by closing the steam inlet port 15 it occupies a position intermediate of the ends of the exhaust groove so that the steam from the cylinder may pass freely through the groove and out through the exhaust pipe 17. The lever 11 is provided at its center with a depending ear 18 which is pivoted in a bifurcation of a bracket or stand 19. The bracket or stand which is designed to be cast on or otherwise rigidly secured to the cylinder 1 has spaced projecting ears 20 formed by the said slot or bifurcation and receiving between them the said ear 18 and provided with transversely alined perforations 21 for the reception of a pivot pin 22 which pierces the depending ear 18. The lever 11 is also provided with a central upwardly projecting lug or ear 23 having a slot 24 for the reception of the pivot 25 which connects the valve rod 14 with the lever 11. The slots in the ends of the arms of the lever 11 and in the upwardlv projecting arm or lug 23 provides for the necessary play of the parts in the valves 9 provided with stems 10 extending I oscillation of the lever and the reciprocation of the valve rod 14 and the valve stem 10. The piston valves 9 are relatively thick and are provided in their upper faces with cen tral threaded sockets 26 for the reception of the lower end of the valve stems 10 which are threaded to engage the said sockets. The bifurcated upper portions or ends of the valve stems 10 are enlarged to embrace the ends of the lever 11 but they may be connected with the latter in any other desired manner.

Steam or other fluid pressure is admitted to the chest 5 by means of a suitable pipe 28.

It will be seen that the valve mechanism is exceedingly simple and inexpensive in construction, that is positive and reliable in operation and that it is capable of ready application to various types of steam and other engines of both the stationary and locomotive type.

hat is claimed is 1. The combination with a main cylinder provided at its ends with ports, a steam chest open at the bottom and mounted directly upon the main cylinder and receiving the valve cylinders, said valve cylinders having inner and outer steam inlet and exhaust openings and provided with longitudinal .exhaust grooves, valve cylinders mounted in the said ports and extending therefrom, piston valves operating in the valve cylinders and controlling the admission and exhaust of fluid pressure to and from the main cylinders, a lever pivoted intermediate of its ends within the steam chest and connected with the piston valves, and a valve rod extending into the steam chest and connected to the said lever.

2. The combination with a main cylinder provided at its ends with openings, a steam steam chest and connected with I chest open at the bottom and mounted directly upon the main cylinder and covering the said openings, valve cylinders fitted in and extending from the said openings and provided with inlet and exhaust ports, piston valves operating in the valve cylinders for controlling the admission and exhaust of fluid to and from the main cylinder, said valves being provided with stems extending from the valve cylinders and a centrally pivoted lever mounted within the the said valve stems and having a central arm for connection with a valve rod.

3. The combination with a main cylinder provided with end openings, valve cylinders secured at their inner ends at the said openings and having inlet and exhaust ports, a steam chest open at the bottom and mounted directly upon the main cylinder and receiving the valve cylinders, piston valves operating within the valve cylinders for controlling admission and exhaust of fluid pressure to and from. the main cylinder, said piston valves being provided with stems extending from the valve cylinders, a bracket Copies of this patent maybe obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. C. 

